Gudgeon Pin Shims

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Jeff T
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Main scooter: GP150 & LI150 S2
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Should I shim the gudgeon pin when fitting an Imola, read arguments for and against.

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wack 63
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Main scooter: '71 GP TS1
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Depends on the crank used whether it has shims or not although Mr. Webster once told me not to use any whatever crank I used.The main problem is finding some good enough to use especially in a high revving kit like the Imola,but that's my opinion.
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Speed Demon
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Don't think you should fit an Imola to any crank that doesn't have big-end shims - in which case gudgeon pin shims aren't required.

You can get decent race-type cranks for little more than £100 from the likes of JB tuning or PM - its a false economy to use anything lower spec than that.
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